Objective
To deal with the operational aspects of hydrographic deep sea surveys, particularly as it applies to advanced techniques in data processing and interpretation. In addition, I have both experience and a desire to remain involved in underwater acoustics. I am particularly interested in research on developing a better understanding of the basic physical processes that influence acoustic underwater signal propagation. My goal is to apply the results of this research to solving the engineering challenges associated with acoustic remote sensing.
Experience
Nippon Foundation – GEBCO Fellow, University of New Hampshire (09/2006 to present)
One year post-graduate program at the Center for Coastal and Ocean Mapping – Joint Hydrographic Center (CCOM/JHC) dealing with advanced techniques required for deep-sea mapping and its inventory. Participated in a month long multibeam survey for Extension of Continental Shelf on board US Coast Guard Cutter Healy in the Arctic Sea made it up to 820 N.
Research Assistant, at the National Institute of Oceanography (08/2006 - 07/2004)
? Performed data acquisition with over six-months at sea while utilizing state-of-the-art systems:
viz. ATLAS Hydrosweep DS and DS2, RESON and Kongsberg
? Supervised data processing activities using GMT, MBSystem, NEPTUNE software
? Wrote MATLAB code for post-processing, resulting in technical papers, co-authored
? Developed Soft Computational Techniques for single beam sea-floor classification
? Planned and mobilized oceanographic cruises with Ships of Opportunity (SOP) program
? Participated in data acquisition cruises on the SOP cargo ships
? Acquired subsurface temperature (i.e. XBT) and meteorological data, sea-surface salinity
Instructor, Jetking School of Computer Technology, Goa, India (09/2001 - 03/2002)
Instructed analog/digital and microprocessors.
Professional Skills
During the past four years, I have effectively performed number of near shore and off shore hydrographic multibeam surveys. Includes mobilization, data acquisition and processing, using the hydrographic software like Kongsberg’s SIS, CARIS HIPS/SIPS, IVS Fledermaus, NEPTUNE, GMT and MBSYSTEM. The final products produced were three dimensional terrain models and a few times in ARC GIS bathymetry maps. A proficient high resolution bathymetric survey was conducted at Portsmouth Harbor, NH, USA, using a Dual head EM3002 system, Applanix POS/MV 320, augmented with real-time kinematic GPS positioning. After successfully installing RTK-GPS base stations and tide gages. Also participated as a member of survey team during the post-tsunami multibeam survey in Andaman Nicobar Islands (2003), India and a survey in southern Indian Ocean (2004) to identify Poly Metallic Nodule sites.
Education
Post-graduate Certificate in Ocean Mapping/Bathymetry, Sept. 2007
University of New Hampshire, Center for Coastal and Ocean Mapping – Joint Hydrographic Center
Durham, NH, USA.
M.S., Electronic Science, 2001
Goa University, Goa, India
Masters Thesis: Design of Comparator Sub-system of the Micro-Power ADC for Bio-medical use. Simulated using SPICE3f5 that resulted in efficient very low power device.
B.S., Physics (with electronics), 1999
Goa University, Goa, India
Certification
• Practical Statistical Signal Processing using MATLAB, Applied Technology Institute, Middletown, RI, USA (2007).
• Advance Training course in CARIS HIPS/SIPS, Fredericton, Canada (2007)
• Fledermaus Professional, Interactive Visualization Software (IVS), Durham, NH, USA (2007)
• Modern Industrial Control & Microcontroller, Govt. of India’s, Advance Training Institute, Chennai, India (2003)
• Advance Diploma in Computer Hardware & Networking, Jetking School of Computer Technology, Goa, India (2002).
Skils
Proficiency in
MATLAB, CARIS HIPS/SIPS, ARC GIS, FLEDERMAUS, Linux based MBSYSTEM, and GMT
Publications
Shyam Prasad, Vasudev Mahale and Vinayak Kodagali, “New sites of Australasian microtektites in the Central Indian Ocean: Implications for the location and size of source crater”, Journal of Geophysical Research (Planet). [accepted 23 Feb 2007, in press]
Bishwajit Chakraborty, Vasudev Mahale, Gajanan Navelkar, B. Ramalingeswara Rao, R. G. Prabhudesai, Baban Ingole, and G. Janakiraman, “Acoustic characterization of seafloor habitats in western continental shelf of India,” ICES Journal of Marine Science, 2007, v. 64, pp. 551–558.
Vasudev Mahale and Bishwajit Chakraborty, “Acoustic seafloor classification employing ANN based technique” presented at 93rd Indian Science Congress conference held at Hyderabad, India from 3rd-7th Jan 2006 and honored for the best presentation.
Bishwajit Chakraborty, Ranadhir Mukopadhya, Pratima Johari, Vasudev Mahale and K. Shashikumar, “Fractal quantification of shelf-slope architecture across western continental margin of India,” Geo-Mar Lett, 2006, 26, pp. 114–119.
Vasudev Mahale, Walid Galal El Dine and Bishwajit Chakraborty, “Seafloor backscatter signal simulation and classification” presented at National symposium on Ocean Electronics held at CUSAT Cochin on 15-16th Dec 2005.
SSCShenoi, D Shankar, G S Michael, JKurian, KKVarma, M R Ramesh Kumar, AM Almeida, A S Unnikrishnan, W Fernandes, N Barreto, C Gnanaseelan, R Mathew, KVPraju, V Mahale, “Hydrography and watermasses in the southeastern Arabian Sea during March–June 2003,” J. Earth Syst. Sci. 114, No.5, October2005, pp.475–491.
B. Chakraborty, Navelkar, G., Prabhudesai, R.G., Janakiraman, G., Mahale, V., Fernandez, William, and Rao, Nayana, “Echo-waveform classification using model and model free techniques: experimental study results from central western continental shelf of India,” presented at IEEE MTS Oceans 2005 Conference held at Washington DC.
Bishwajit Chakraborty, Vasudev Mahale, Carlyle de Sousa and Pranab Das, “Sea-floor classification using echo-waveforms: a method employing hybrid neural network architecture”, IEEE Geoscience and Remote Sensing Letters, 2004, 1(3), pp. 196-200.
Bishwajit Chakraborty and Vasudev Mahale, “Sea-floor roughness parameter estimation using high frequency angular backscatter data of multi beam echo sounding system”, Proceedings Europen Conference on Underwater Acoustics held at Technical University, Delft, Netherland, July 2004.
Pranab Das, Bishwajit Chakraborty, V.N. Kodagali and Vasudev Mahale, “Segmentation of sea floor bathymetric profile- use of Artificial Neural Network”, Proceedings Advance Machine Vision Systems of Societal Applications (AMSA), held at CEERI, Chennai, December 17-18, 2003, pp. 222-232.